CN101600258B - Method and device for confirming channel capacity - Google Patents

Method and device for confirming channel capacity Download PDF

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Publication number
CN101600258B
CN101600258B CN2008101144739A CN200810114473A CN101600258B CN 101600258 B CN101600258 B CN 101600258B CN 2008101144739 A CN2008101144739 A CN 2008101144739A CN 200810114473 A CN200810114473 A CN 200810114473A CN 101600258 B CN101600258 B CN 101600258B
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paging
rate
pch
service
subscriber
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CN101600258A (en
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王晓鹿
秦飞
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Abstract

The invention discloses a method for confirming the channel capacity, comprising the following steps: setting paging channel (PCH) configuration parameters; calculating the maximum user paging number (Nmax) which can be supported by the PCH in a fixed frame period according to the PCH configuration parameters; confirming paging arrival rate according to the Nmax and the characteristics of a paging arrival process model and a service process model in the PCH; and calculating user paging frequency which can be supported in one position area according to the confirmed paging arrival rate. The invention also discloses a device for confirming the channel capacity. The method and the device for confirming the channel capacity can calculate the capacity of a paging channel.

Description

A kind of method and apparatus of definite channel capacity
Technical field
The present invention relates to mobile communication technology, particularly a kind of method and apparatus of definite paging channel capacity.
Background technology
Paging channel (PCH, Paging Channel) capacity in time slot (TS, Time S1ot) 0 common signal channel directly affects the miscellaneous service that need carry out paging, as the access capability of speech business and short message service etc.Under certain professional scale, in the time of can not satisfying the requiring of indexs such as blocking rate when paging capability, just need adjust the configuration of PCH according to real system.Therefore, the volume calculation of PCH/determine to play crucial effects for the network planning.Here the volume calculation of the PCH that is mentioned is meant that estimation PCH under parameter configuration such as specific paging subchannel arrangements, transmission block size and the specific delay requirement of network side, can satisfy the paging of how many users under the lane place.
In synchronous code division multiple access of time-division (TD-SCDMA, Time Division-Synchronous CodeDivision Multiple Access) system, PCH is a descending transmission channel, is used for the beep-page message of broadcast base station mobile paging station.Physical layer can be with PCH and the forward access channel (FACH that is all descending transmission channel, Forward Access Channel) is multiplexed into CCTrCH Coded Composite Transport Channel (CCTrCH, Coded Composite Transport Channel), be carried on the Secondary Common Control Physical Channel (S-CCPCH, Secondary Common Control Physical Channel).Generally, S-CCPCH and Page Indication Channel (PICH, Paging Indicator Channel) are the cycle time division multiplexing with fixing frame number, and the user removes to obtain beep-page message in the PCH paging group by understanding PICH.
In actual applications, the PCH data carried by data in a plurality of Transmission Time Intervals (TTI, Transmission Time Interval) can be formed a PCH piece.Each PCH piece is by N PCHIndividual paging subchannel is formed, and each paging subchannel is made up of two continuous radio frames, can hold the subscriber paging record of specific quantity.Usually, PICH takies two radio frames.Between PICH and PCH, be provided with N GAP, be used for guaranteeing when travelling carriage need be understood the data of PCH, to be arranged enough processing times.
PICH piece and PCH piece are formed paging block (Paging Block) jointly, and as shown in Figure 1, Fig. 1 forms schematic diagram for existing paging block.Wherein: N PICHThe frame number that expression PICH piece is comprised, N PCHThe paging subchannel number that is comprised in the expression PCH piece, each paging subchannel constitutes by two continuous radio frames, so, 2 * N PCHPromptly represent the frame number that comprised in the PCH piece.
At present,, also do not provide suitable settling mode, and the volume calculation that can realize in the prior art mainly is at Traffic Channel, i.e. dedicated channel for capacity how to estimate PCH.But, PCH belongs to common signal channel, and the volume calculation mode of Traffic Channel and be not suitable for common signal channel, this be because: packet arrival process and processing procedure in Traffic Channel and the common signal channel there are differences, and power is controlled and disturb suppressor mode also inequality, so, can not use the volume calculation mode of Traffic Channel to carry out the common signal channel volume calculation.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of definite channel capacity, can realize the volume calculation to paging channel.
Another object of the present invention is to provide a kind of device of definite channel capacity, can realize volume calculation paging channel.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of definite channel capacity, this method comprises:
The parameter channel configuration of A, setting paging channel PCH;
B, according to described parameter channel configuration, calculate the maximum subscriber paging that described PCH supports in the anchor-frame cycle and count Nmax;
C, according to calling arrival process among the PCH and service process model feature, and the maximum subscriber paging that described PCH supports in the described anchor-frame cycle counts Nmax, determines rate of arriving calls;
D, according to described rate of arriving calls, determine the subscriber paging number supported in the lane place, i.e. channel capacity;
Wherein, described step C comprises:
C1, set up the random number data storehouse, and set rate of arriving calls;
C2, service queue is set, and configuration service source number;
C3, arrive according to Poisson distribution with the rate of arriving calls that sets, satisfy negative exponent the time of advent at interval and distribute, enter described service queue after subscriber paging arrives and prepare the acceptance service according to queueing theory theoretical modeling subscriber paging;
C4, in anchor-frame in the cycle, the service source provides service for preceding Nmax subscriber paging in the described service queue, and whether the stand-by period of judging not serviced subscriber paging after service is finished has surpassed the wait duration that sets in advance, if, then abandon this subscriber paging, determine that this subscriber paging gets clogged;
The subscriber paging number that C5, statistics get clogged calculates blocking rate;
C6, the difference that the blocking rate and that calculates is deducted predefined paging success rate compare, if blocking rate greater than described difference, then resets rate of arriving calls, and repeating said steps C3～C6; If blocking rate is less than described difference, and be positioned at predefined scope, then with the rate of arriving calls of current setting as determined rate of arriving calls, and execution in step D.
A kind of device of definite channel capacity, this device comprises:
The unit is set, is used to set the parameter channel configuration of paging channel PCH;
First computing unit is used for according to described parameter channel configuration, calculates the maximum subscriber paging that described PCH supports in the anchor-frame cycle and counts Nmax;
Determining unit is used for according to the calling arrival process of PCH and the aspect of model of service process, and the maximum subscriber paging that described PCH supports in the described anchor-frame cycle counts Nmax, determines rate of arriving calls;
Second computing unit is used for the rate of arriving calls determined according to described, calculates the subscriber paging number of supporting in the lane place, determines the result as channel capacity;
Wherein, described determining unit comprises:
Set up subelement, be used to set up the random number data storehouse, and set rate of arriving calls;
Subelement is set, is used to be provided with service queue, and configuration service source number;
The paging subelement is used for arriving according to Poisson distribution with the rate of arriving calls that sets according to queueing theory theoretical modeling subscriber paging, satisfies negative exponent the time of advent at interval and distributes, and enters described service queue after subscriber paging arrives and prepares the acceptance service;
The service subelement, be used in anchor-frame in the cycle, provide service by the service source that is disposed for preceding Nmax subscriber paging in the described service queue, and whether the stand-by period of judging not serviced subscriber paging after service is finished has surpassed the wait duration that sets in advance, if, then abandon this subscriber paging, determine that this subscriber paging gets clogged;
The statistics subelement is used to add up the subscriber paging number that gets clogged, and calculates blocking rate;
Compare subelement, the difference that the blocking rate and that is used for calculating deducts predefined paging success rate compares, if blocking rate is greater than described difference, then reset rate of arriving calls, and notify described paging subelement to carry out self function according to the described rate of arriving calls that resets; If blocking rate is less than described difference, and be positioned at predefined scope, then notify described second computing unit to carry out self function.
As seen, adopt technical scheme of the present invention, on the basis of realizing the hard calculation of capacity of PCH, by analyzing paging arrival process and service process, emphasis has been considered owing to block and influence that factor such as abandon is brought channel capacity; That is, scheme of the present invention has demonstrated fully the service process of PCH than the work characteristics of more comprehensively having considered PCH, can estimate the capacity of PCH more exactly.
Description of drawings
Fig. 1 forms schematic diagram for existing paging block.
Fig. 2 is the flow chart of the inventive method embodiment.
Fig. 3 is the composition structural representation of apparatus of the present invention embodiment.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
For solving problems of the prior art, a kind of PCH channel capacity evaluation method is proposed among the present invention, working method by concrete analysis PCH, calling arrival process and the service process of emulation PC H, calculate supported subscriber paging number in the lane place, when guaranteeing that this subscriber paging number makes a call according to specific business arrival distribution, indexs such as blocking rate can meet the demands.
Specific implementation comprises: set the parameter channel configuration of PCH as required, as paging subchannel number N PCH, the transmission block number of each paging subchannel carrying and size etc.; According to the parameter channel configuration of setting, calculate not consider to block and abandon etc. under the situation in the anchor-frame cycle the supported maximum subscriber paging of PCH and count Nmax; Afterwards, according to definite user's arrival process and service processes such as system business types, the influence of factor to the supported subscriber paging number of reality such as consider to block and abandon, that is: according to the aspect of model of calling out arrival process and service process among the PCH, and the supported maximum subscriber paging of PCH is counted Nmax in the described anchor-frame cycle, determine rate of arriving calls,, calculate supported subscriber paging number in the lane place according to the rate of arriving calls of determining.
Below by specific embodiment scheme of the present invention is described in further detail:
Fig. 2 is the flow chart of the inventive method embodiment.As shown in Figure 2, may further comprise the steps:
Step 21: the parameter channel configuration of setting PCH.
In this step, set the parameter channel configuration of PCH as required, comprising: paging subchannel number N PCH, the transmission block number of each paging subchannel carrying and the size of each transmission block etc.Strictly speaking, " PCH " that is mentioned in the present embodiment should be " PCH piece ", but in the present embodiment according to the common call of this area, will it be called " PCH ".
Step 22:, calculate interior supported maximum subscriber paging of anchor-frame cycle and count Nmax, promptly hard calculation of capacity according to the parameter channel configuration of setting.
In actual applications, the described anchor-frame cycle typically refers to 64 frames.
The concrete account form that supported maximum subscriber paging is counted Nmax in the anchor-frame cycle is as shown in Equation (1):
Nmax=FLOOR ((TB_Size*TB_Num-RNC_ header overhead)/paging acknowledgment size) * N PCH
(1)
Wherein, FLOOR represents to round downwards; TB_Size represents each the transmission block size in each paging subchannel, and TB_Num represents the transmission block number in each paging subchannel, all is predefined; And RNC_ header overhead and paging acknowledgment size all are in advance as can be known.
Step 23: set the paging success rate TH that requires PCH_Success
The paging success rate TH that hypothesis is set in the present embodiment PCH_SuccessBe 99%.
In addition,,, can suppose that Poisson distribution is satisfied in the arrival of subscriber paging according to these business features because PCH is mainly used in support voice business and short message service, as shown in Equation (2):
Pn＝{X＝n}＝(λn/n！)e-λ(n＝0，1...，Nmax) (2)
N wherein promptly represents the subscriber paging number that arrives, and λ represents rate of arriving calls in the present embodiment.
Step 24: the initial value of setting rate of arriving calls λ.
The concrete value of λ can be provided with according to actual needs.Under the rate of arriving calls λ initial value of setting, the probability that system does not block is:
P{n＜＝Nmax}＝TH PCH_Success (3)
Correspondingly, the probability of generation obstruction is:
Σ k = N max + 1 ∞ P { n = k } × ( k - N max ) λ ≤ ( 1 - TH PCH _ Success ) - - - ( 4 )
The concrete derivation of above-mentioned formula (4) is known in this field, repeats no more.
Step 25: according to the information of setting, in conjunction with paging arrival and obstruction process, and the fixed length service of PCH and time-delay abandon the mode co-simulation, determines final rate of arriving calls λ.
According to before introduction as can be known, in step 22, calculated the supported maximum subscriber paging number of PCH in the anchor-frame cycle, but this is just ideally, a theoretical value that obtains when situation such as promptly not considering to block and abandon.So in the present embodiment, also need, and the fixed length service of PCH and time-delay abandon the mode co-simulation, determine final rate of arriving calls λ in conjunction with paging arrival and the obstruction process shown in above-mentioned formula (2) and (4).
But above-mentioned steps 21～25 described process The Realization of Simulation are as follows:
1) sets up the random number data storehouse, and set rate of arriving calls λ.
That is mentioned here sets up the random number data storehouse, promptly refers to set up the required sample space of emulation, i.e. analog subscriber paging; Rate of arriving calls λ promptly refers to the initial value of the rate of arriving calls λ of setting in the step 24.
2) configuration paging block periodicity and the longest wait duration of user.
The anchor-frame cycle of being mentioned before paging block periodicity described in this step (PBP, Paging Block Period) promptly refers to, its length is generally 64 frames.After the longest wait duration of user is meant that subscriber paging arrives, if not serviced yet after how long waiting for, this subscriber paging will be dropped.Usually, configuration waits for that at most (time-delay 2 * 640ms) if subscriber paging is not serviced yet, then abandons two 64 frames among the PCH.
Configuration paging block periodicity described in this step promptly is equal to the configuration paging subchannel number N described in the step 21 PCH, because according to the record of Fig. 1 as can be known, paging block is by PICH, N GAPForm with PCH three parts, and PICH, N GAPThe frame number that takies is in advance as can be known, just is equal to and has disposed paging subchannel number N so disposed paging block periodicity PCHJust in emulation, can directly not set paging subchannel number N usually PCH, but by 3) shown in calculate.
3) take frame number and N according to paging block periodicity and PICH GAPTake frame number calculating PCH and take frame number.
4) calculate the interior supported maximum subscriber paging of paging block periodicity and count Nmax.
Concrete account form repeats no more as shown in Equation (1).
5) service queue is set, and configuration service source number, be generally 1.
6) arrive according to Poisson distribution with the rate of arriving calls λ that sets according to queueing theory theoretical modeling subscriber paging, satisfy negative exponent the time of advent at interval and distribute, enter service queue after subscriber paging arrives and prepare the acceptance service.
In simulation process, sufficiently long simulation time need be set, to guarantee the evenness of sampling point value.
7) service process of analog service formation.
The fixed length distribution is satisfied to the service duration of each subscriber paging in the service source.The service source is with the N in the paging block periodicity PCHIndividual paging subchannel is expressed as a time shaft, each service of paging subchannel specific subscriber paging, i.e. FLOOR ((TB_Size*TB_Num-RNC_ header overhead)/paging acknowledgment size); Every service finishes a paging subchannel, promptly behind two frames, then continues the next paging subchannel of service.
After a paging block periodicity finishes, promptly, when the Nmax that comes a service queue front user serviced intact after, the not serviced user in back then needs queuing to wait until that next paging block periodicity serves, if the stand-by period surpasses predefined wait duration, and is as 2 paging block periodicities, not serviced yet, then wait timeout abandons.If a subscriber paging wait timeout is dropped, then think to get clogged.
8) add up the subscriber paging number that gets clogged, calculate blocking rate.
In this step, can calculate blocking rate according to the mode of block_ue/total_ue.Wherein, block_ue represents that the subscriber paging number that gets clogged in the paging block periodicity, total_ue represent all subscriber paging sums in the paging block periodicity (comprise block and service).
9) with the blocking rate and the 1-TH that calculate PCH_SuccessCompare, if blocking rate is greater than 1-TH PCH_Success, then reset rate of arriving calls λ, and repeat step 6)～9), and can adjust simulation time according to the value size of the rate of arriving calls λ that resets, such as, λ is more little, and then simulation time is long more; If blocking rate is less than 1-TH PCH_Success, and be positioned at predefined scope, as 0.99～1, then execution in step 26.
Step 26: average single user's busy hour call arrival rate of obtaining the miscellaneous service that Traffic Channel can be carried in the system.
Here average single user's busy hour call arrival rate of being mentioned refers to promptly if having only a user when business was busy, how many its corresponding rate of arriving calls was.This value is in advance as can be known, can be come out according to business record by operator, can also use for reference some empirical values in addition and determines.
Step 27: calculate supported subscriber paging number in the lane place.
Concrete account form is: rate of arriving calls λ/average single user's busy hour call arrival rate.
So far, just finished PCH channel capacity estimation process of the present invention basically.Further, the actual paging capability of supported subscriber paging number and RNC equipment in the lane place that calculates can also be compared, if the actual paging capability of RNC equipment is less than supported subscriber paging number in the lane place that calculates, then the actual paging capability with RNC equipment is as the criterion.
In the subsequent process, if under other parameter channel configuration, as comprise that the PCH under the different situations such as paging subchannel number carries out the channel capacity estimation, repeats flow process shown in Figure 2 and gets final product.
Need to prove that each parameter in the foregoing description only for illustrating, is not limited to technical scheme of the present invention such as the concrete value of service source number, anchor-frame Cycle Length and paging success rate etc.In actual applications, the concrete value of each parameter can be provided with arbitrarily as required.
Based on said method, Fig. 3 is the composition structural representation of apparatus of the present invention embodiment.As shown in Figure 3, this device comprises:
Unit 31 is set, is used to set the parameter channel configuration of PCH;
First computing unit 32 is used for according to the parameter channel configuration that sets, and calculates the interior supported maximum subscriber paging of PCH of anchor-frame cycle and counts Nmax;
Determining unit 33 is used for according to the calling arrival process of PCH and the aspect of model of service process, and the supported maximum subscriber paging of PCH is counted Nmax in the anchor-frame cycle, determines rate of arriving calls;
Second computing unit 34 is used for calculating supported subscriber paging number in the lane place according to the rate of arriving calls of determining.
Described parameter channel configuration comprises: paging subchannel number N PCH, the transmission block number of each paging subchannel carrying and the size of each transmission block.
Wherein, specifically comprise in first computing unit 32:
First computation subunit 321 is used for calculating the total size of each all transmission block of paging subchannel and the difference of RNC header overhead;
Second computation subunit 322 is used to calculate the merchant of described difference and each paging acknowledgment size of obtaining in advance;
Round subelement 323, be used for described merchant is rounded downwards;
The 3rd computation subunit 324 is used for result and the paging subchannel number N that will obtain after rounding downwards PCHMultiply each other, the product that obtains is the interior supported maximum subscriber paging of PCH of anchor-frame cycle and counts Nmax.
Specifically comprise in the determining unit 33:
Set up subelement 331, be used to set up the random number data storehouse, and set rate of arriving calls;
Subelement 332 is set, is used to be provided with service queue, and configuration service source number;
Paging subelement 333 is used for arriving according to Poisson distribution with the rate of arriving calls that sets according to queueing theory theoretical modeling subscriber paging, satisfies negative exponent the time of advent at interval and distributes, and enters service queue after subscriber paging arrives and prepares the acceptance service;
Service subelement 334, be used in anchor-frame in the cycle, provide service by the service source that is disposed for preceding Nmax subscriber paging in the service queue, and whether the stand-by period of judging not serviced subscriber paging after service is finished has surpassed the wait duration that sets in advance, if, then abandon this subscriber paging, determine that this subscriber paging gets clogged;
Statistics subelement 335 is used to add up the subscriber paging number that gets clogged, and calculates blocking rate;
Compare subelement 336, the difference that the blocking rate and that is used for calculating deducts predefined paging success rate compares, if blocking rate is greater than described difference, then reset rate of arriving calls, and notice paging subelement 333 is carried out self function according to the described rate of arriving calls that resets; If blocking rate is less than described difference and be positioned at predefined scope, then notify second computing unit 34 to carry out self function.
Above-mentioned service source number is 1, and the anchor-frame cycle is 64 frames, and the wait duration that sets in advance is two anchor-frame cycles, and predefined paging success rate is 99%.
Specifically comprise in second computing unit 34:
Obtain subelement 341, be used for obtaining average single user's busy hour call arrival rate of the miscellaneous service that the network Traffic Channel can carry;
Computation subunit 342 is used to calculate the rate of arriving calls determined and the merchant of average single user's busy hour call arrival rate, calculates the gained result and is supported subscriber paging number in the lane place.
In addition, also can further comprise in the device shown in Figure 3:
Comparing unit 35, the supported subscriber paging number in a lane place that is used for calculating and the actual paging capability of RNC equipment compare, if the actual paging capability of RNC equipment is less than supported subscriber paging number in the lane place that calculates, then the actual paging capability with RNC equipment is as the criterion, as final channel capacity estimation result.
The concrete workflow of device shown in Figure 3 please refer to the related description among the method embodiment shown in Figure 2, repeats no more herein.
As seen, adopt the technical scheme of the embodiment of the invention, on the basis of realizing the hard calculation of capacity of PCH, by analyzing paging arrival process and service process, emphasis has been considered owing to block and influence that factor such as abandon is brought capacity, and has been taken into full account the actual paging capability of RNC equipment.In a word, scheme of the present invention has demonstrated fully the service process of PCH than the work characteristics of more comprehensively having considered PCH, can estimate the PCH capacity more exactly.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (13)

1. the method for a definite channel capacity is characterized in that, this method comprises:
The parameter channel configuration of A, setting paging channel PCH;
B, according to described parameter channel configuration, calculate the maximum subscriber paging that described PCH supports in the anchor-frame cycle and count Nmax;
C, according to the calling arrival process among the PCH and the aspect of model of service process, and the maximum subscriber paging that described PCH supports in the described anchor-frame cycle counts Nmax, determines rate of arriving calls;
D, according to described rate of arriving calls, determine the subscriber paging number supported in the lane place, i.e. channel capacity;
Wherein, described step C comprises:
C1, set up the random number data storehouse, and set rate of arriving calls;
C2, service queue is set, and configuration service source number;
C3, arrive according to Poisson distribution with the rate of arriving calls that sets, satisfy negative exponent the time of advent at interval and distribute, enter described service queue after subscriber paging arrives and prepare the acceptance service according to queueing theory theoretical modeling subscriber paging;
C4, in anchor-frame in the cycle, the service source provides service for preceding Nmax subscriber paging in the described service queue, and whether the stand-by period of judging not serviced subscriber paging after service is finished has surpassed the wait duration that sets in advance, if, then abandon this subscriber paging, determine that this subscriber paging gets clogged;
The subscriber paging number that C5, statistics get clogged calculates blocking rate;
C6, the difference that the blocking rate and that calculates is deducted predefined paging success rate compare, if blocking rate greater than described difference, then resets rate of arriving calls, and repeating said steps C3～C6; If blocking rate is less than described difference, and be positioned at predefined scope, then with the rate of arriving calls of current setting as determined rate of arriving calls, and execution in step D.
2. method according to claim 1 is characterized in that, described parameter channel configuration comprises: paging subchannel number N PCH, the transmission block number of each paging subchannel carrying and the size of each transmission block.
3. method according to claim 2 is characterized in that, described step B comprises:
Calculate the total size of all transmission blocks in each paging subchannel and the difference of radio network controller (RNC) header overhead;
The merchant of each paging acknowledgment size of calculating described difference and obtaining in advance;
Described merchant is rounded downwards;
With described result and the paging subchannel number N that obtains after rounding downwards PCHMultiply each other, the product that obtains is the maximum subscriber paging that described PCH supports in the described anchor-frame cycle and counts Nmax.
4. method according to claim 1 is characterized in that, described service source number is 1, and the described anchor-frame cycle is 64 frames, and the described wait duration that sets in advance is two anchor-frame cycles, and described predefined paging success rate is 99%.
5. method according to claim 1 is characterized in that, described calculating blocking rate comprises:
The merchant of the subscriber paging sum that calculates subscriber paging number that described anchor-frame gets clogged in the cycle and described service and get clogged, the result who calculates is described blocking rate.
6. method according to claim 1 is characterized in that, described step D comprises:
Obtain average single user's busy hour call arrival rate of the miscellaneous service of Traffic Channel carrying in the network;
Calculate the merchant of the described rate of arriving calls of determining and described average single user's busy hour call arrival rate, calculate the gained result and be the subscriber paging number of supporting in the described lane place.
7. according to claim 1 or 6 described methods, it is characterized in that, after the described step D, further comprise:
The subscriber paging number supported in the lane place that calculates and the actual paging capability of RNC equipment are compared, if the actual paging capability of described RNC equipment is less than the subscriber paging number of supporting in the described lane place that calculates, then the actual paging capability with described RNC equipment is as the criterion.
8. the device of a definite channel capacity is characterized in that, this device comprises:
The unit is set, is used to set the parameter channel configuration of paging channel PCH;
First computing unit is used for according to described parameter channel configuration, calculates the maximum subscriber paging that described PCH supports in the anchor-frame cycle and counts Nmax;
Determining unit is used for according to the calling arrival process of PCH and the aspect of model of service process, and the maximum subscriber paging that described PCH supports in the described anchor-frame cycle counts Nmax, determines rate of arriving calls;
Second computing unit is used for the rate of arriving calls determined according to described, calculates the subscriber paging number of supporting in the lane place, determines the result as channel capacity;
Wherein, described determining unit comprises:
Set up subelement, be used to set up the random number data storehouse, and set rate of arriving calls;
Subelement is set, is used to be provided with service queue, and configuration service source number;
The paging subelement is used for arriving according to Poisson distribution with the rate of arriving calls that sets according to queueing theory theoretical modeling subscriber paging, satisfies negative exponent the time of advent at interval and distributes, and enters described service queue after subscriber paging arrives and prepares the acceptance service;
The service subelement, be used in anchor-frame in the cycle, provide service by the service source that is disposed for preceding Nmax subscriber paging in the described service queue, and whether the stand-by period of judging not serviced subscriber paging after service is finished has surpassed the wait duration that sets in advance, if, then abandon this subscriber paging, determine that this subscriber paging gets clogged;
The statistics subelement is used to add up the subscriber paging number that gets clogged, and calculates blocking rate;
Compare subelement, the difference that the blocking rate and that is used for calculating deducts predefined paging success rate compares, if blocking rate is greater than described difference, then reset rate of arriving calls, and notify described paging subelement to carry out self function according to the described rate of arriving calls that resets; If blocking rate is less than described difference, and be positioned at predefined scope, then notify described second computing unit to carry out self function.
9. device according to claim 8 is characterized in that, described parameter channel configuration comprises: paging subchannel number N PCH, the transmission block number of each paging subchannel carrying and the size of each transmission block.
10. device according to claim 9 is characterized in that, described first computing unit comprises:
First computation subunit is used for calculating the total size of each all transmission block of paging subchannel and the difference of radio network controller (RNC) header overhead;
Second computation subunit is used to calculate the merchant of described difference and each paging acknowledgment size of obtaining in advance;
Round subelement, be used for described merchant is rounded downwards;
The 3rd computation subunit is used for the result and the paging subchannel number N that obtain after rounding described downwards PCHMultiply each other, the product that obtains is the maximum subscriber paging that described PCH supports in the described anchor-frame cycle and counts Nmax.
11. device according to claim 8 is characterized in that, described service source number is 1, and the described anchor-frame cycle is 64 frames, and the described wait duration that sets in advance is two anchor-frame cycles, and described predefined paging success rate is 99%.
12. device according to claim 8 is characterized in that, described second computing unit comprises:
Obtain subelement, be used for obtaining average single user's busy hour call arrival rate of the miscellaneous service of network Traffic Channel carrying;
Computation subunit is used to calculate the merchant of the described rate of arriving calls of determining and described average single user's busy hour call arrival rate, calculates the gained result and is the subscriber paging number of supporting in the described lane place.
13. according to Claim 8 or 12 described devices, it is characterized in that, further comprise in this device:
Comparing unit, the subscriber paging number that a lane place that is used for calculating is supported and the actual paging capability of RNC equipment compare, if the actual paging capability of described RNC equipment is less than the subscriber paging number of supporting in the described lane place that calculates, then the actual paging capability with described RNC equipment is as the criterion.
CN2008101144739A 2008-06-06 2008-06-06 Method and device for confirming channel capacity Active CN101600258B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1728621A (en) * 2004-07-29 2006-02-01 大唐移动通信设备有限公司 Method for estimating capability in sector of TD-SCDMA system
CN1856154A (en) * 2005-04-19 2006-11-01 大唐移动通信设备有限公司 Method for inquiring Co-shared channel capacity
CN101060713A (en) * 2006-04-20 2007-10-24 大唐移动通信设备有限公司 A paging method and base station and terminal equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1728621A (en) * 2004-07-29 2006-02-01 大唐移动通信设备有限公司 Method for estimating capability in sector of TD-SCDMA system
CN1856154A (en) * 2005-04-19 2006-11-01 大唐移动通信设备有限公司 Method for inquiring Co-shared channel capacity
CN101060713A (en) * 2006-04-20 2007-10-24 大唐移动通信设备有限公司 A paging method and base station and terminal equipment

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